/* ================================================
   CAMARA MAMADY — PORTFOLIO PRESTIGE (SLATE & INDIGO)
   Design: Elegant Modern Tech · Linear/Stripe Aesthetic
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Harmonious Palette: Deep Slate, Royal Indigo, Electric Blue */
  --bg-slate-950:   #090d16;
  --bg-slate-900:   #0f172a;
  --bg-card:        rgba(15, 23, 42, 0.75);
  --bg-card-hover:  rgba(30, 41, 59, 0.85);
  --border-slate:   rgba(255, 255, 255, 0.08);
  --border-hover:   rgba(99, 102, 241, 0.35);

  --text-white:     #ffffff;
  --text-slate-200: #e2e8f0;
  --text-slate-400: #94a3b8;
  --text-slate-500: #64748b;

  --indigo-500:     #6366f1;
  --indigo-600:     #4f46e5;
  --blue-500:       #0ea5e9;
  --emerald-500:    #10b981;
  --amber-500:      #f59e0b;

  --grad-primary:   linear-gradient(135deg, #6366f1 0%, #0ea5e9 100%);
  --grad-surface:   linear-gradient(180deg, rgba(30, 41, 59, 0.6) 0%, rgba(15, 23, 42, 0.8) 100%);
  --grad-text:      linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);

  --font-main:      'Plus Jakarta Sans', sans-serif;
  --font-body:      'Inter', sans-serif;

  --radius-sm:      8px;
  --radius-md:      12px;
  --radius-lg:      18px;
  --radius-xl:      24px;

  --transition:     0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card:    0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-glow:    0 0 25px rgba(99, 102, 241, 0.2);
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background-color: var(--bg-slate-950);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--indigo-600); color: #fff; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* SCROLLBAR */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-slate-950); }
::-webkit-scrollbar-thumb { background: var(--indigo-600); border-radius: 99px; }

/* GLOW BACKGROUND */
.ambient-glow-top {
  position: fixed; top: -150px; left: 30%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  filter: blur(90px); pointer-events: none; z-index: 0;
}
.ambient-glow-bottom {
  position: fixed; bottom: -100px; right: 10%;
  width: 550px; height: 550px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
  filter: blur(90px); pointer-events: none; z-index: 0;
}

/* NAVIGATION */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000; padding: 0 3rem; height: 80px;
  display: flex; align-items: center; justify-content: space-between;
  transition: all var(--transition);
}
#navbar.scrolled {
  background: rgba(9, 13, 22, 0.88);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-slate);
}

.nav-brand {
  font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; color: #fff;
  display: flex; align-items: center; gap: 8px;
}
.nav-brand-tag {
  font-size: 0.68rem; font-weight: 700; padding: 2px 8px;
  background: rgba(99, 102, 241, 0.15); border: 1px solid rgba(99, 102, 241, 0.4);
  color: var(--indigo-500); border-radius: 99px; text-transform: uppercase;
}

.nav-links-desktop { display: flex; align-items: center; gap: 2.2rem; }
.nav-links-desktop a {
  font-size: 0.9rem; font-weight: 500; color: var(--text-slate-400);
  transition: color var(--transition);
}
.nav-links-desktop a:hover { color: #fff; }

.btn-nav-primary {
  padding: 0.6rem 1.3rem; background: var(--indigo-600);
  color: #fff !important; font-weight: 600 !important; font-size: 0.88rem !important;
  border-radius: var(--radius-sm); transition: all var(--transition);
}
.btn-nav-primary:hover {
  background: var(--indigo-500); transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 99px; }

/* HERO SECTION */
#hero {
  min-height: 90vh; padding: 120px 3rem 4rem;
  display: flex; align-items: center; position: relative; z-index: 1;
}

.hero-layout {
  max-width: 1280px; margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 4rem;
  align-items: center;
}

.badge-status {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3); border-radius: 99px;
  font-size: 0.8rem; font-weight: 600; color: var(--emerald-500);
  margin-bottom: 1.5rem;
}
.status-dot-emerald {
  width: 7px; height: 7px; background: var(--emerald-500); border-radius: 50%;
  box-shadow: 0 0 8px var(--emerald-500);
}

.hero-title-bold {
  font-size: clamp(2.6rem, 5vw, 4.5rem);
  font-weight: 800; line-height: 1.05; letter-spacing: -0.03em;
  margin-bottom: 1.25rem; color: #fff;
}
.hero-title-bold .highlight-indigo {
  background: var(--grad-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.hero-typed-text {
  font-size: 1.2rem; font-weight: 600; color: var(--blue-500);
  min-height: 2rem; margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.05rem; color: var(--text-slate-400); line-height: 1.8;
  margin-bottom: 2.25rem; max-width: 640px; font-family: var(--font-body);
}
.hero-description strong { color: #fff; font-weight: 600; }

.hero-btn-group { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }

.btn-indigo-solid {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0.9rem 2rem; background: var(--indigo-600);
  color: #fff; font-weight: 600; font-size: 0.92rem;
  border-radius: var(--radius-sm); border: none; cursor: pointer;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.35); transition: all var(--transition);
}
.btn-indigo-solid:hover {
  background: var(--indigo-500); transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(79, 70, 229, 0.5);
}

.btn-slate-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0.9rem 2rem; background: rgba(255, 255, 255, 0.03);
  color: var(--text-slate-200); font-weight: 600; font-size: 0.92rem;
  border-radius: var(--radius-sm); border: 1px solid var(--border-slate);
  backdrop-filter: blur(10px); cursor: pointer; transition: all var(--transition);
}
.btn-slate-outline:hover {
  border-color: var(--indigo-500); background: rgba(99, 102, 241, 0.1);
  color: #fff; transform: translateY(-2px);
}

/* HERO PROFILE CARD RIGHT */
.hero-card-frame {
  background: var(--bg-card);
  border: 1px solid var(--border-slate);
  border-radius: var(--radius-xl);
  padding: 1.25rem; backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card); transition: all var(--transition);
}
.hero-card-frame:hover { border-color: var(--border-hover); transform: translateY(-4px); }

.hero-img-box {
  width: 100%; aspect-ratio: 4/5; border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--border-slate);
}
.hero-img-box img { width: 100%; height: 100%; object-fit: cover; object-position: top; }

.hero-card-details {
  padding: 1.25rem 0.5rem 0.25rem;
  display: flex; justify-content: space-between; align-items: center;
}
.hero-card-name { font-size: 1.15rem; font-weight: 700; color: #fff; }
.hero-card-role { font-size: 0.82rem; color: var(--indigo-500); font-weight: 600; }

/* METRICS BAR */
.metrics-grid-3 {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
  max-width: 1280px; margin: 3.5rem auto 0; padding: 1.75rem 2rem;
  background: var(--bg-card); border: 1px solid var(--border-slate);
  border-radius: var(--radius-lg); backdrop-filter: blur(16px);
}
.metric-item { display: flex; align-items: center; gap: 1.25rem; }
.metric-icon-box {
  width: 46px; height: 46px; border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12); border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex; align-items: center; justify-content: center;
  color: var(--indigo-500); font-size: 1.2rem;
}
.metric-val { font-size: 1.6rem; font-weight: 800; color: #fff; line-height: 1; }
.metric-lbl { font-size: 0.82rem; color: var(--text-slate-400); margin-top: 4px; }

/* SECTIONS BASE */
section { padding: 6rem 3rem; position: relative; z-index: 1; }

.section-head {
  text-align: center; max-width: 720px; margin: 0 auto 3.5rem;
}
.tag-subtitle {
  display: inline-block; padding: 4px 12px; background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3); border-radius: 99px;
  font-size: 0.75rem; font-weight: 700; color: var(--indigo-500);
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.75rem;
}
.title-section-main {
  font-size: clamp(2rem, 3.5vw, 3rem); font-weight: 800;
  letter-spacing: -0.02em; color: #fff; line-height: 1.15;
}
.desc-section-main {
  font-size: 1rem; color: var(--text-slate-400); margin-top: 0.75rem;
  line-height: 1.7; font-family: var(--font-body);
}

/* ABOUT DUAL DEGREE */
#about { background: var(--bg-slate-900); }

.about-dual-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
  max-width: 1200px; margin: 0 auto;
}
.about-card-luxe {
  background: var(--bg-card); border: 1px solid var(--border-slate);
  border-radius: var(--radius-xl); padding: 2.25rem; backdrop-filter: blur(16px);
  transition: all var(--transition);
}
.about-card-luxe:hover {
  border-color: var(--border-hover); transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.about-card-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.25rem; }
.about-card-icon {
  width: 48px; height: 48px; border-radius: var(--radius-md);
  background: var(--grad-primary); display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.3rem; flex-shrink: 0;
}
.about-card-title { font-size: 1.25rem; font-weight: 700; color: #fff; }
.about-card-sub { font-size: 0.82rem; color: var(--indigo-500); font-weight: 600; }
.about-card-text { font-size: 0.92rem; color: var(--text-slate-400); line-height: 1.7; font-family: var(--font-body); }

/* PERFECT STRUCTURED PROJECTS GRID (2 & 3 COLUMNS) */
#projects { background: var(--bg-slate-950); }

.projects-clean-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem;
  max-width: 1280px; margin: 0 auto;
}

.project-item-card {
  background: var(--bg-card); border: 1px solid var(--border-slate);
  border-radius: var(--radius-xl); overflow: hidden; backdrop-filter: blur(16px);
  transition: all var(--transition); display: flex; flex-direction: column;
}
.project-item-card:hover {
  border-color: var(--border-hover); transform: translateY(-6px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.project-cover-container {
  position: relative; width: 100%; aspect-ratio: 16/9; overflow: hidden;
  border-bottom: 1px solid var(--border-slate);
}
.project-cover-container img {
  width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease;
}
.project-item-card:hover .project-cover-container img { transform: scale(1.05); }

.project-company-badge {
  position: absolute; top: 1rem; left: 1rem;
  padding: 4px 12px; background: rgba(9, 13, 22, 0.85);
  border: 1px solid var(--border-slate); border-radius: 99px;
  font-size: 0.75rem; font-weight: 700; color: var(--text-slate-200);
  backdrop-filter: blur(10px);
}

.project-content-body {
  padding: 1.75rem; flex: 1; display: flex; flex-direction: column;
}

.project-title-text {
  font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 0.5rem; line-height: 1.3;
}

.project-description-text {
  font-size: 0.9rem; color: var(--text-slate-400); line-height: 1.6;
  margin-bottom: 1.25rem; font-family: var(--font-body); flex: 1;
}

.project-tech-pills { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tech-pill {
  font-size: 0.72rem; font-weight: 600; padding: 4px 10px;
  background: rgba(99, 102, 241, 0.1); border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 99px; color: var(--indigo-500);
}

/* EXPERIENCE TIMELINE */
#experience { background: var(--bg-slate-900); }

.timeline-structured {
  position: relative; max-width: 1000px; margin: 0 auto; padding-left: 2.5rem;
}
.timeline-structured::before {
  content: ''; position: absolute; left: 0.5rem; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, var(--indigo-600), var(--blue-500), transparent);
}

.timeline-row { position: relative; margin-bottom: 2.5rem; }
.timeline-row:last-child { margin-bottom: 0; }
.timeline-node-circle {
  position: absolute; left: -2.55rem; top: 0.25rem;
  width: 18px; height: 18px; border-radius: 50%; background: var(--bg-slate-900);
  border: 3px solid var(--indigo-500); box-shadow: 0 0 10px var(--indigo-500);
}

.timeline-content-card {
  background: var(--bg-card); border: 1px solid var(--border-slate);
  border-radius: var(--radius-lg); padding: 1.75rem 2rem; backdrop-filter: blur(16px);
  transition: all var(--transition);
}
.timeline-content-card:hover {
  border-color: var(--border-hover); transform: translateX(6px);
}

.timeline-date-pill {
  font-size: 0.75rem; font-weight: 700; color: var(--indigo-500);
  padding: 3px 10px; background: rgba(99, 102, 241, 0.12); border-radius: 99px;
  display: inline-block; margin-bottom: 0.5rem;
}

.timeline-job-title { font-size: 1.25rem; font-weight: 700; color: #fff; }
.timeline-job-company { font-size: 0.9rem; color: var(--text-slate-400); font-weight: 500; margin-bottom: 0.75rem; }

.timeline-bullet-points {
  font-size: 0.9rem; color: var(--text-slate-400); line-height: 1.7;
  font-family: var(--font-body); display: flex; flex-direction: column; gap: 0.5rem;
}

/* SKILLS SECTION */
#skills { background: var(--bg-slate-950); }

.skills-tabs-container {
  max-width: 1100px; margin: 0 auto;
}
.skills-tab-nav {
  display: flex; justify-content: center; gap: 1rem; margin-bottom: 3rem; flex-wrap: wrap;
}
.skill-tab-button {
  padding: 0.8rem 1.75rem; background: var(--bg-card); border: 1px solid var(--border-slate);
  border-radius: 99px; color: var(--text-slate-400); font-size: 0.9rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition);
}
.skill-tab-button.active {
  background: var(--indigo-600); border-color: var(--indigo-600); color: #fff;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.4);
}

.skill-list-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
}
.skill-box-card {
  background: var(--bg-card); border: 1px solid var(--border-slate);
  border-radius: var(--radius-md); padding: 1.25rem 1.5rem;
  display: flex; justify-content: space-between; align-items: center;
}
.skill-box-name { font-size: 0.95rem; font-weight: 600; color: #fff; }
.skill-box-badge { font-size: 0.8rem; font-weight: 700; color: var(--indigo-500); }

/* CONTACT */
#contact { background: var(--bg-slate-900); }

.contact-layout-clean {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem;
  max-width: 1180px; margin: 0 auto;
}
.contact-info-card {
  display: flex; align-items: center; gap: 1.25rem; padding: 1.25rem 1.5rem;
  background: var(--bg-card); border: 1px solid var(--border-slate);
  border-radius: var(--radius-md); margin-bottom: 1rem; transition: all var(--transition);
}
.contact-info-card:hover { border-color: var(--border-hover); transform: translateX(6px); }

.contact-form-box {
  background: var(--bg-card); border: 1px solid var(--border-slate);
  border-radius: var(--radius-xl); padding: 2.25rem; backdrop-filter: blur(16px);
  display: flex; flex-direction: column; gap: 1.25rem;
}
.form-input-slate {
  width: 100%; background: rgba(9, 13, 22, 0.7); border: 1px solid var(--border-slate);
  border-radius: var(--radius-sm); padding: 0.85rem 1.2rem; color: #fff;
  font-family: var(--font-main); font-size: 0.92rem; outline: none; transition: all var(--transition);
}
.form-input-slate:focus { border-color: var(--indigo-500); box-shadow: 0 0 15px rgba(99, 102, 241, 0.3); }

/* FOOTER */
#footer {
  border-top: 1px solid var(--border-slate); padding: 2rem 3rem;
  background: var(--bg-slate-950); text-align: center;
  color: var(--text-slate-500); font-size: 0.88rem; position: relative; z-index: 1;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero-layout { grid-template-columns: 1fr; text-align: center; }
  .hero-description { margin: 0 auto 2.25rem; }
  .hero-btn-group { justify-content: center; }
  .about-dual-grid { grid-template-columns: 1fr; }
  .projects-clean-grid { grid-template-columns: 1fr; }
  .contact-layout-clean { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  #navbar { padding: 0 1.5rem; }
  .nav-links-desktop { display: none; }
  .nav-toggle { display: flex; }
  section { padding: 4.5rem 1.5rem; }
  #hero { padding: 100px 1.5rem 3rem; }
  .metrics-grid-3 { grid-template-columns: 1fr; text-align: left; }
  .skill-list-grid { grid-template-columns: 1fr; }
}